The first few RGs were terrible (by first, I mean the first dozen were regarded as finnicky as heck). @Omega_Tahu learned the RX sucked the hard way. From what I'm to understand the RG Zaku II has self-destructive hip joints. If you want an RX-78-2 in 1/144 scale, go with the Revive. It's simple but does literally everything it needs to right.
I feel like the styles will clash here. You've got a very classic Gundam-y skirt shaping (despite being a bit more feminine) on a very rounded yet also angular and complex upper torso, with a very blocky and geometric shoulder, and then a classic Gundam head with hair...